In rough ratios, how are the radiation exposures of Miraluma Breast Imaging vs. PET/CAT scans?

1. In rough ratios, how are the radiation exposures of Miraluma Breast Imaging vs. mammography vs. PET/CAT scans? 2. I am 67 years young (thus no breast feeding etc.), any other health concerns for Miraluma Breast Imaging? For example, my gall bladder was removed in 2005, would I have higher incidence probability due to difficulty of eliminating CARDIOLITE® (the agent used in the test)? (ref.: "Elimination" section of https://www.drugs.com/pro/cardiolite.html)